Jack London was an American author who wrote The Call of the Wild, White Fang, and The Sea Wolf along with many other popular books. A pioneer in the then-burgeoning world of commercial magazine fiction, he was one of the first Americans to make a lucrative career exclusively from writing. . .Writer and historian Dale L. Walker writes: «London's true metier was the short story... London's true genius lay in the short form, 7,500 words and j under, where the flood of images in his teeming brain and the innate power of his narrative gift were at once constrained and freed. His stories that run longer than the magic 7,500 generally — but certainly not always — could have benefited from self-editing».